Staple plate rotary brush and method of making



Jan. 22, 1957 N. E. NIELSEN STAPLE PLATE ROTARY BRUSH AND METHOD O MAKING 2 Sheets-Sheet l Filed Jan. 13, 1954 Jan. 22, 1957 N. E. NlELsEN STAPLE PLATE ROTARY BRUSH AND METHOD OF MAKING 2 Sheets-Sheet 2 Filed Jan. 13, 1954 man United States. Patent O "ce STAPLE PLATE ROTARY BRUSH AND METHOD OF MAKING Niels E. Nielsen, Summit, N. J., assignor to Newark Brush JCompany, Kenilworth, N. J., a corporation of New ersey This invention relates to a rotary brush made up of bristles of suitable material such as relatively fine iron wire that has its principal support on a circular plate by means of staples. It is thus the principal object of my invention to provide a new and improved brush construction in which the bristles or brush material is assembled principally on a single circular disc shaped plate that is backed up by another somewhat similar shaped plate. Another object of my invention is to provide a rotary brush construction which can be readily processed in its manufacture. Other objects will appear to one familiar with the construction of this type of rotary brushes.

In the drawings Figure 1 is a plan view of the main bristle supporting plate of the disc type.

Figure 2 is a plan view of the sauxiliary or side plate.

Figure 3 is a vertical sectional view Ithrough the plates shown in Figures 1 and 2 as they are constructed for assembly with the bristles, the main plate being designated A and the auxiliary plate being designated B.

Figure 4 is a view showing bristles being assembled to the main plate A.

Figure 5 is a section on the line 5 5 of Figure 4.

Figure 6 is a view of the complete assembly of the bristles to the two plates A and B.

Figure 7 is a view on the line 7-7 of Figure 6.

Figure 8 is a view on 4the line 8 8 of Figure 6.

Figure 9 is a view somewhat like Figure 6 but showing a slightly modified form of construction.

Figure 10 is a view on the line 10-10 of Figure 9.

Figure 11 is a view on the line 11--11 Of Figure 9.

In the various views wherein like numbers refer to corresponding parts, A is a main plate having a circular projecting hub portion 1 which may have holes h drilled or punched therein arcuately spaced apart as illustrated by the distance 2 between the small scars or depressions s where a drill or punch comes through the circular shoulder 3 of the hub portion 1. I prefer either punching or drilling the holes h rather than forcing the staples through the shoulder material. As a matter of fact these small scars s do serve a useful purpose as they help guide the staples 4 through the circular shoulder 3.

Where the plates A and B are larger in diameter than the plates shown in Figures 1 and 2 as shown in Figure 9 the shoulder 3 is wider and the holes for the staples whether drilled or punched are spaced so that they clear the inner face 5 of ythe disc A. After the brush unit comprising all the bristles that the staples will hold and leave length enough to go through the shoulder portion 3 and have length enough to be clinched over at 6 as shown in Figure 5, the auxiliary plate B is placed in position as shown in Figure 5 and pressure is then applied against the two discs to bring their central portions together as shown in Figure 5 and the plates are then securely fastened together as by spot welds 7. Then the outwardly projecting flanges 8 and 9 are forced together so that these rims 8 and 9 are in parallel relationship as shown in Figure 8 and 2,778,048 Patented Jan.l 2.2, 1957 the fingers 10 are forced into the brush material to securely lock this material in-to position on the plates A and B which are each provided with centrally located holes 11 for mounting the brush on a drive shaft. In order to get alternate spacing of the fingers 10 each plate is provided with holes 12 and 13 for assembly purposes, it being understood that the fingers 10 on disc A are arcuately spaced differently from fingers 10 on plate B so that they will come into this alternate assembly position when the holes 12 and 13 are in alignment.

In Figure 9 as shown, has a plurality of fingers 14 arcuately spaced between the fingers 10 and radially closer to the central hole 11. These may preferably be radially spaced so Athat when plates A and B are forced into final position fingers 14 may pass directly over and into contact with the staples 4 thereby providing a safety lock on certain of the staples.

With the construction shown and described I have secured the objects of my invention, a new and improved staple plate rotary brush.

Having thus described my invention, what I claim is:

l. A rotary brush of the character described, having a pair of disc shaped plates, one main plate only having an inwardly projecting circular hub portion radially spaced a substantial distance from the outer rim of the plate, wire brush material positioned around said hub portion and eX- tending outwardly beyond the disc edge, staples having ends going through said inwardly projecting hub portion for holding the brush material to the hub, the staple ends being bent over on the inner side of the hub portion, while the other plate is fastened to the hub portion of the first mentioned plate so as to form a backing for the brush material.

2. A rotary brush as set forth in claim 1 further defined in that the last mentioned plate after being put into position is preferably spot welded to the first mentioned plate hub portion and both plates have a plurality of arcuately positioned pointed fingers which are forced into the brush material when the plates are moved into their final operative position.

3. A rotary brush as set forth in claim 1 further defined in that holes for the staples are preferably initially made in the said hub portion whereby the staples are directly moved through the hub material in the assembly operation.

4. The process of making a rotary brush which consists in forming a pair of circular plates having centrally located holes therein and projecting fingers, one main plate only having a centrally located projecting hub portion, assembling suitable brush material into a plurality of staples directly onto said hub portion thereby forming staple units sufficient in number to fill the outer hub surface, mounting these staples on the hub so their inner ends project through the hub, then bending over these projecting ends, then placing the other plate in position and fastening it =to the first plate, then forcing the plates into final position with the said fingers going into the brush material as and for the purpose described.

5. A rotary brush as set forth in claim 1 further defined in that holes in the hub portion are directly made so as to leave slight recess scars on the outer face of the plate, said scars acting as guides for the ends of 4the staples when forced through the holes.

6. A rotary brush as set forth in claim 1 further defined in that each plate has a plurality of inwardly projecting fingers in different arcuately spaced relation with respect 4to each other but radially the same and further characterized in :that each plate has an inner row of safety fingers arcuately spaced but on a shorter radius than the first mentioned fingers for the purpose described.

(References on following page) 9 4 u References Cited in the file of this patent 2,609'5242 Nelson Sept. 2, 1952 UNIIED STATES PATENTS 2,658,311 Parry Feb 9, 1954 599,044 Pain Feb. 15, 1898 FOREIGNV'PATENTS 1,714,137 Radinse May 21, 1929. 5 555,950 Great Britairi Sept. 14, 1943 1386931102' Herold Iuly 26; 1932l fla-il 

